| Yann Mambrini , Laboratoire de Physique Theorique d'Orsay , Paris, France, Nov. 20-30, 2016 |
| Maira Dutra , Universite Paris-Sup/Lab de Physique Theorique D'Orsay, Orsay, France, Nov. 20-28, 2016 |
| Reynier Peletier , Kapteyn Insitute, University of Groningen, Hague, Netherlands, Sep. 29 - Oct. 4, 2016 |
| Martinez Valpuesta , Instituto de AstrofÃsica de Canarias, , Spain, Sep. 29 - Oct. 4, 2016 |
| Mahmood Sabooni , University of Waterloo, Waterloo, Canada, Sep. 24-28, 2016 |
| Sudhanshu Barway , South African Astronomical Observatory, , Indian, Aug. 20 - Sep. 8, 2016 |
| Eric Lagadec , Observatoire de la Cote d'Azur, , FRENCH, Aug. 20 - Sep. 8, 2016 |
| XIAOWEI Liu , Peking University, , Chinese, Aug. 20 - Sep. 8, 2016 |
| Kam-Ching Leung , University of Nebraska-Lincoln, USA, , United States of America, Aug. 19 - Sep. 10, 2016 |
| Arman Shafieloo , Cosmology Group- Korea Astronomy and Space Science Institute, Daejeon, South Korea, Aug. 14, 2016 |
| Reza Rezaei , Instituto de AstrofÃsica de Canarias , Santa Cruz de Tenerife, Spain, Aug. 10, 2016 |
| Reza Rezaei , Instituto de AstrofÃsica de Canarias - IAC, Canarias, spain, Aug. 8-10, 2016 |
| hadi rahmani , LAM - Laboratoire d'Astrophysique de Marseille, Marseille, France, July 26-28, 2016 |
| Stefano Marcantoni , Department of Physics, University of Trieste, Trieste, Italy , June 5-13, 2016 |
| Alireza Hojjati , University of British Columbia, Vancouver, Canada, May 16, 2016 |
| Ali Hassanali , The International Center for Theoretical Physics, Triest, Italy, May 12-14, 2016 |
| Cumrun Vafa , Harvard University, , USA, April 27 - May 1, 2016 |
| Alberto Bueno , Instituto de Astrofisica de Canarias (IAC), Tenerife, Spain, , Spain, April 9-24, 2016 |
| Andrea Rodriguez Anton , Instituto de Astrofisica de Canarias (IAC), Tenerife, Spain, , Spain, April 9-24, 2016 |
| Dario Francia , Scuola Normale Superiore, Rome, Italy, Feb. 14-20, 2016 |
| Luca Amendola , University of Heidelberg, Heidelberg, Germany, Jan. 23-26, 2016 |
| FrancescoTorsello , Oskar Klein Centre, Stockholm University, Stockholm, Sweden, Jan. 23-26, 2016 |
| Jonas Enander , Oskar Klein Centre, Stockholm, Sweden, Jan. 23-26, 2016 |
| David Mota , University of Oslo, Oslo, Norway, Jan. 23-26, 2016 |
| Ruth Durrer , University de Geneve, Geneve, Switzerland, Jan. 23-26, 2016 |
| Edvard Mortsell , Stockholm University, Stockholm, Sweden, Jan. 23-26, 2016 |
| Martin Kunz , University of Geneva, Geneva, Switzerland, Jan. 23-26, 2016 |
| Tomi Koivisto , The Nordic Institute for Theoretical Physics (NORDITA), Stockholm, Sweden, Jan. 23-26, 2016 |
| Azadeh Maleknejad , IPM, School of Physics, Tehran, Iran, Dec. 22, 2015 - Feb. 19, 2016 |
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